Defines an entity type with a relationship to one or more other entity type.
Assembly: System.Data.Entity (in System.Data.Entity.dll)
defines the features that must be implemented by an entity type that has relationships to other types. Relationships are defined as associations in the Entity Data Model.
To use custom data classes together with an Entity Data Model (EDM), you must either inherit from EntityObject or implement a set of interfaces. When you implement custom data class interfaces, you must implement when the entity type is related to other types. For information about how to customize your objects, see Implementing an Entity Data Model with Custom Objects (Entity Framework).
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.